Shapedoku puzzles combine logic and spatial reasoning with an understanding of basic geometric concepts.
Jeffrey J. Wanko, wankojj@muohio.edu, teaches mathematics methods courses at Miami University in Oxford, Ohio. He is interested in the development of students'logical reasoning skills using puzzles.
Jennifer V. Nickell, jnickel@ncsu.edu, who has taught high school geometry, is working toward her PhD in mathematics education at North Carolina State University in Raleigh.